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Finding the Fourth Proportional to 22,589.99, 31,174.02 and 12,518.99

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Solution

The fourth proportional to 22,589.99, 31,174.02 and 12,518.99 is: 17,276.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,589.99 : 31,174.02 = 12,518.99 : x
  2. Step 2: Convert to fraction form
    22,589.99/31,174.02 = 12,518.99/x
  3. Step 3: Cross multiply
    22,589.99x = 31,174.02 × 12,518.99
  4. Step 4: Simplify right side
    22,589.99x = 390,267,088.77
  5. Step 5: Solve for x
    x = 390,267,088.77/22,589.99
  6. Step 6: Final answer
    x = 17,276.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.